<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			#f{
				background-color: #00FFFF;
				width: 100px;
				height: 100px;
				font-family: "宋体";
				transition: 2s;
			}
			#f:hover{
				width: 200px;
				height: 200px;
				font-family: "楷体";
			}
		</style>
	</head>
	<body>
		<div id="f">
			大笨象会跳舞
		</div>
	</body>
</html>
